Invention Grant
- Patent Title: Enhanced reservation signal for cellular communication in unlicensed spectrum
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Application No.: US16816049Application Date: 2020-03-11
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Publication No.: US11659402B2Publication Date: 2023-05-23
- Inventor: Deepankar Bhattacharjee , Prateek Sharma , Farouk Belghoul , Dawei Zhang , Haitong Sun , Wei Zeng , Sreevalsan Vallath
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- Main IPC: H04W16/14
- IPC: H04W16/14 ; H04W72/04 ; H04W74/08 ; H04W84/12 ; H04W24/04 ; H04W72/0446

Abstract:
This disclosure relates to providing a reservation signal for cellular communication in unlicensed spectrum. A cellular base station may perform a listen-before-talk procedure on an unlicensed frequency channel. The cellular base station may transmit a reservation signal on the unlicensed frequency channel after successfully performing the listen-before-talk procedure. The cellular base station may perform carrier sensing on the unlicensed frequency channel at least once during the duration of the reservation signal. The cellular base station may perform cellular communication on the unlicensed frequency channel after ceasing transmitting the reservation signal.
Public/Granted literature
- US20200296593A1 Enhanced Reservation Signal for Cellular Communication in Unlicensed Spectrum Public/Granted day:2020-09-17
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